*{
    margin: 0px;
    padding: 0px;
}
#all #head{
    width: 100%;
    min-width: 1200px;
}
#head{
    background: #fafafa;
    height: 100px;
    width: 100%;
    min-width: 1200px;
    display: inline-block;
    text-align: center;
}
.mod-header{
    height: 75px;
    width: 900px;
    float: left;
    margin-top: 10px;
}
#user-login{
    float: right;
    margin: 20px 50px 0px 0px;
    display: block;
    height: 25px;
    width: 80px;
    color: black;
    font-size: 15px;
    text-decoration: none;
    line-height: 25px;
    text-align: center;
}
#user-login:hover{
    color: blue;
}
#nav{
    margin-top: -4px;
    background:#f5f5f5;
}
.nav-2{
    height: 45px;
    width: 100%;
    min-width: 1200px;
    font-weight: 500;
}
.nav-3{
    background: #f5f5f5;
    padding-left: 382px;
    display: block;
    height: 45px;
    width: 400px;
    font-size: 20px;
    line-height: 45px;

}
#content{
    position: relative;
    text-align: center;
    height: 300px;
    width: 400px;
    margin: 10px 0px 0px 334px;
}
.tips-text{
    position: absolute;
    top: 39px;
    font-size: 13px;
    color: red;
    left: 264px;
}
#tittle{
    display: block;
    font-size: 12px;
    margin: 20px 0px -14px -92px;
}
li{
    height: 40px;
    line-height: 40px;
    margin-top: 25px;
    list-style: none;
}
input{
    padding-left: 10px;
    border-radius: 5px;
    height: 40px;
    width: 300px;
    border: 1px solid black;
}
#code{
    width: 165px;
}
#send{
    background-color: blue;
    color: white;
    padding: 0px;
    text-align: center;
    margin-left: 20px;
    width: 115px;
}
#send:hover{
    background-color: #ff3399;
    color: black;
}
#next , #button{
    background-color: blue;
    color: white;
    width: 312px;
}
#next:hover{
    background-color: #ff3399;
    color: black;
}
#button:hover{
    background-color: #ff3399;
    color: black;
}
